Depozite în Continente de Est
Asia
Afghanistan, Armenia, Azerbaijan, Burma, Cambodia, China, India, Indonesia, Iran, Japan, Malaysia, Mongolia, Nepal, North Korea, Pakistan, Saudi Arabia, Syria, Taiwan, Thailand, Turkey, Vietnam, Yemen
India
Africa
Cameroon, Cape Verde, Eritrea, Ethiopia, Kenya, Libya, Madagascar, Nigeria, Rwanda, South Africa, Sudan, Uganda
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Europa
France, Georgia, Germany, Greece, Iceland, Italy, Netherlands, Poland, Portugal, Spain, United Kingdom
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Alții
antarctica, insulele hawaii
antarctica
Depozite în Continente de Vest
America de Nord
Canada, Costa Rica, Panama, USA
USA
America de Sud
Argentina, Bolivia, Brazil, Chile, Ecuador, Paraguay
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Depozite în Oceania Continent
Australia
Central Australia, Western Australia
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